577 lines
16 KiB
Objective-C
577 lines
16 KiB
Objective-C
/*
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* MACDRV Cocoa event queue code
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*
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* Copyright 2011, 2012, 2013 Ken Thomases for CodeWeavers Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <sys/types.h>
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#include <sys/event.h>
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#include <sys/time.h>
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#include <libkern/OSAtomic.h>
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#include "macdrv_cocoa.h"
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#import "cocoa_event.h"
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#import "cocoa_app.h"
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#import "cocoa_window.h"
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static NSString* const WineEventQueueThreadDictionaryKey = @"WineEventQueueThreadDictionaryKey";
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@interface MacDrvEvent : NSObject
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{
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@public
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macdrv_event* event;
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}
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- (id) initWithEvent:(macdrv_event*)event;
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@end
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@implementation MacDrvEvent
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- (id) initWithEvent:(macdrv_event*)inEvent
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{
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self = [super init];
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if (self)
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{
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event = macdrv_retain_event(inEvent);
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}
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return self;
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}
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- (void) dealloc
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{
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if (event) macdrv_release_event(event);
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[super dealloc];
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}
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@end
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@implementation WineEventQueue
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- (id) init
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{
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[self doesNotRecognizeSelector:_cmd];
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[self release];
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return nil;
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}
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- (id) initWithEventHandler:(macdrv_event_handler)handler
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{
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NSParameterAssert(handler != nil);
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self = [super init];
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if (self != nil)
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{
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struct kevent kev;
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int rc;
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fds[0] = fds[1] = kq = -1;
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event_handler = handler;
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events = [[NSMutableArray alloc] init];
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eventsLock = [[NSLock alloc] init];
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if (!events || !eventsLock)
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{
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[self release];
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return nil;
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}
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if (pipe(fds) ||
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fcntl(fds[0], F_SETFD, 1) == -1 ||
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fcntl(fds[0], F_SETFL, O_NONBLOCK) == -1 ||
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fcntl(fds[1], F_SETFD, 1) == -1 ||
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fcntl(fds[1], F_SETFL, O_NONBLOCK) == -1)
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{
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[self release];
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return nil;
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}
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kq = kqueue();
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if (kq < 0)
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{
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[self release];
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return nil;
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}
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EV_SET(&kev, fds[0], EVFILT_READ, EV_ADD | EV_ENABLE, 0, 0, 0);
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do
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{
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rc = kevent(kq, &kev, 1, NULL, 0, NULL);
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} while (rc == -1 && errno == EINTR);
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if (rc == -1)
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{
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[self release];
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return nil;
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}
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}
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return self;
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}
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- (void) dealloc
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{
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[events release];
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[eventsLock release];
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if (kq != -1) close(kq);
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if (fds[0] != -1) close(fds[0]);
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if (fds[1] != -1) close(fds[1]);
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[super dealloc];
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}
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- (void) signalEventAvailable
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{
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char junk = 1;
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int rc;
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do
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{
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rc = write(fds[1], &junk, 1);
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} while (rc < 0 && errno == EINTR);
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if (rc < 0 && errno != EAGAIN)
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ERR(@"%@: got error writing to event queue signaling pipe: %s\n", self, strerror(errno));
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}
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- (void) postEventObject:(MacDrvEvent*)event
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{
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MacDrvEvent* lastEvent;
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[eventsLock lock];
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if ((event->event->type == MOUSE_MOVED ||
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event->event->type == MOUSE_MOVED_ABSOLUTE) &&
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(lastEvent = [events lastObject]) &&
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(lastEvent->event->type == MOUSE_MOVED ||
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lastEvent->event->type == MOUSE_MOVED_ABSOLUTE) &&
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lastEvent->event->window == event->event->window &&
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lastEvent->event->mouse_moved.drag == event->event->mouse_moved.drag)
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{
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if (event->event->type == MOUSE_MOVED)
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{
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lastEvent->event->mouse_moved.x += event->event->mouse_moved.x;
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lastEvent->event->mouse_moved.y += event->event->mouse_moved.y;
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}
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else
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{
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lastEvent->event->type = MOUSE_MOVED_ABSOLUTE;
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lastEvent->event->mouse_moved.x = event->event->mouse_moved.x;
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lastEvent->event->mouse_moved.y = event->event->mouse_moved.y;
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}
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lastEvent->event->mouse_moved.time_ms = event->event->mouse_moved.time_ms;
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}
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else
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[events addObject:event];
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[eventsLock unlock];
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[self signalEventAvailable];
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}
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- (void) postEvent:(macdrv_event*)inEvent
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{
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MacDrvEvent* event = [[MacDrvEvent alloc] initWithEvent:inEvent];
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[self postEventObject:event];
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[event release];
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}
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- (MacDrvEvent*) getEventMatchingMask:(macdrv_event_mask)mask
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{
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char buf[512];
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int rc;
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NSUInteger index;
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MacDrvEvent* ret = nil;
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/* Clear the pipe which signals there are pending events. */
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do
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{
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rc = read(fds[0], buf, sizeof(buf));
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} while (rc > 0 || (rc < 0 && errno == EINTR));
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if (rc == 0 || (rc < 0 && errno != EAGAIN))
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{
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if (rc == 0)
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ERR(@"%@: event queue signaling pipe unexpectedly closed\n", self);
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else
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ERR(@"%@: got error reading from event queue signaling pipe: %s\n", self, strerror(errno));
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return nil;
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}
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[eventsLock lock];
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index = 0;
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while (index < [events count])
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{
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MacDrvEvent* event = [events objectAtIndex:index];
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if (event_mask_for_type(event->event->type) & mask)
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{
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[[event retain] autorelease];
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[events removeObjectAtIndex:index];
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if (event->event->deliver == INT_MAX ||
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OSAtomicDecrement32Barrier(&event->event->deliver) >= 0)
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{
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ret = event;
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break;
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}
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}
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else
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index++;
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}
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[eventsLock unlock];
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return ret;
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}
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- (void) discardEventsMatchingMask:(macdrv_event_mask)mask forWindow:(NSWindow*)window
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{
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NSIndexSet* indexes;
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[eventsLock lock];
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indexes = [events indexesOfObjectsPassingTest:^BOOL(id obj, NSUInteger idx, BOOL *stop){
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MacDrvEvent* event = obj;
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return ((event_mask_for_type(event->event->type) & mask) &&
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(!window || event->event->window == (macdrv_window)window));
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}];
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[events removeObjectsAtIndexes:indexes];
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[eventsLock unlock];
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}
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- (BOOL) query:(macdrv_query*)query timeout:(NSTimeInterval)timeout processEvents:(BOOL)processEvents
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{
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macdrv_event* event;
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NSDate* timeoutDate = [NSDate dateWithTimeIntervalSinceNow:timeout];
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BOOL timedout;
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event = macdrv_create_event(QUERY_EVENT, (WineWindow*)query->window);
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event->query_event.query = macdrv_retain_query(query);
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query->done = FALSE;
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[self postEvent:event];
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macdrv_release_event(event);
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timedout = ![[WineApplicationController sharedController] waitUntilQueryDone:&query->done
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timeout:timeoutDate
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processEvents:processEvents];
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return !timedout && query->status;
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}
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- (BOOL) query:(macdrv_query*)query timeout:(NSTimeInterval)timeout
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{
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return [self query:query timeout:timeout processEvents:FALSE];
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}
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- (void) resetMouseEventPositions:(CGPoint)pos
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{
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MacDrvEvent* event;
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[eventsLock lock];
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for (event in events)
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{
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if (event->event->type == MOUSE_BUTTON)
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{
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event->event->mouse_button.x = pos.x;
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event->event->mouse_button.y = pos.y;
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}
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else if (event->event->type == MOUSE_SCROLL)
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{
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event->event->mouse_scroll.x = pos.x;
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event->event->mouse_scroll.y = pos.y;
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}
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}
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[eventsLock unlock];
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}
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/***********************************************************************
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* OnMainThread
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*
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* Run a block on the main thread synchronously.
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*/
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void OnMainThread(dispatch_block_t block)
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{
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSMutableDictionary* threadDict = [[NSThread currentThread] threadDictionary];
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WineEventQueue* queue = [threadDict objectForKey:WineEventQueueThreadDictionaryKey];
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__block BOOL finished;
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if (!queue)
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{
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/* Fall back to synchronous dispatch without handling query events. */
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dispatch_sync(dispatch_get_main_queue(), block);
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[pool release];
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return;
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}
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finished = FALSE;
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OnMainThreadAsync(^{
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block();
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finished = TRUE;
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[queue signalEventAvailable];
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});
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while (!finished)
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{
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MacDrvEvent* macDrvEvent;
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struct kevent kev;
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while (!finished &&
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(macDrvEvent = [queue getEventMatchingMask:event_mask_for_type(QUERY_EVENT)]))
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{
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queue->event_handler(macDrvEvent->event);
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}
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if (!finished)
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{
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[pool release];
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pool = [[NSAutoreleasePool alloc] init];
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kevent(queue->kq, NULL, 0, &kev, 1, NULL);
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}
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}
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[pool release];
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}
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/***********************************************************************
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* macdrv_create_event_queue
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*
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* Register this thread with the application on the main thread, and set
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* up an event queue on which it can deliver events to this thread.
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*/
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macdrv_event_queue macdrv_create_event_queue(macdrv_event_handler handler)
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{
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSMutableDictionary* threadDict = [[NSThread currentThread] threadDictionary];
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WineEventQueue* queue = [threadDict objectForKey:WineEventQueueThreadDictionaryKey];
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if (!queue)
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{
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queue = [[[WineEventQueue alloc] initWithEventHandler:handler] autorelease];
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if (queue)
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{
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if ([[WineApplicationController sharedController] registerEventQueue:queue])
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[threadDict setObject:queue forKey:WineEventQueueThreadDictionaryKey];
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else
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queue = nil;
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}
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}
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[pool release];
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return (macdrv_event_queue)queue;
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}
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/***********************************************************************
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* macdrv_destroy_event_queue
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*
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* Tell the application that this thread is exiting and destroy the
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* associated event queue.
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*/
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void macdrv_destroy_event_queue(macdrv_event_queue queue)
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{
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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WineEventQueue* q = (WineEventQueue*)queue;
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NSMutableDictionary* threadDict = [[NSThread currentThread] threadDictionary];
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[[WineApplicationController sharedController] unregisterEventQueue:q];
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[threadDict removeObjectForKey:WineEventQueueThreadDictionaryKey];
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[pool release];
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}
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/***********************************************************************
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* macdrv_get_event_queue_fd
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*
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* Get the file descriptor whose readability signals that there are
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* events on the event queue.
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*/
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int macdrv_get_event_queue_fd(macdrv_event_queue queue)
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{
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WineEventQueue* q = (WineEventQueue*)queue;
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return q->fds[0];
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}
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/***********************************************************************
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* macdrv_copy_event_from_queue
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*
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* Pull an event matching the event mask from the event queue and store
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* it in the event record pointed to by the event parameter. If a
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* matching event was found, return non-zero; otherwise, return 0.
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*
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* The caller is responsible for calling macdrv_release_event on any
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* event returned by this function.
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*/
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int macdrv_copy_event_from_queue(macdrv_event_queue queue,
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macdrv_event_mask mask, macdrv_event **event)
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{
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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WineEventQueue* q = (WineEventQueue*)queue;
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MacDrvEvent* macDrvEvent = [q getEventMatchingMask:mask];
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if (macDrvEvent)
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*event = macdrv_retain_event(macDrvEvent->event);
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[pool release];
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return (macDrvEvent != nil);
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}
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/***********************************************************************
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* macdrv_create_event
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*/
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macdrv_event* macdrv_create_event(int type, WineWindow* window)
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{
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macdrv_event *event;
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event = calloc(1, sizeof(*event));
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event->refs = 1;
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event->deliver = INT_MAX;
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event->type = type;
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event->window = (macdrv_window)[window retain];
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return event;
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}
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/***********************************************************************
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* macdrv_retain_event
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*/
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macdrv_event* macdrv_retain_event(macdrv_event *event)
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{
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OSAtomicIncrement32Barrier(&event->refs);
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return event;
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}
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/***********************************************************************
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* macdrv_release_event
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*
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* Decrements the reference count of an event. If the count falls to
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* zero, cleans up any resources, such as allocated memory or retained
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* objects, held by the event and deallocates it
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*/
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void macdrv_release_event(macdrv_event *event)
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{
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if (OSAtomicDecrement32Barrier(&event->refs) <= 0)
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{
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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switch (event->type)
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{
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case IM_SET_TEXT:
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if (event->im_set_text.text)
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CFRelease(event->im_set_text.text);
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break;
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case KEYBOARD_CHANGED:
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CFRelease(event->keyboard_changed.uchr);
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break;
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case QUERY_EVENT:
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macdrv_release_query(event->query_event.query);
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break;
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case WINDOW_GOT_FOCUS:
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[(NSMutableSet*)event->window_got_focus.tried_windows release];
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break;
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}
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[(WineWindow*)event->window release];
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free(event);
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[pool release];
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}
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}
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/***********************************************************************
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* macdrv_create_query
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*/
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macdrv_query* macdrv_create_query(void)
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{
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macdrv_query *query;
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query = calloc(1, sizeof(*query));
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query->refs = 1;
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return query;
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}
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/***********************************************************************
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* macdrv_retain_query
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*/
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macdrv_query* macdrv_retain_query(macdrv_query *query)
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{
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OSAtomicIncrement32Barrier(&query->refs);
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return query;
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}
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/***********************************************************************
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* macdrv_release_query
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*/
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void macdrv_release_query(macdrv_query *query)
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{
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if (OSAtomicDecrement32Barrier(&query->refs) <= 0)
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{
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switch (query->type)
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{
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case QUERY_DRAG_OPERATION:
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if (query->drag_operation.pasteboard)
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CFRelease(query->drag_operation.pasteboard);
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break;
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case QUERY_DRAG_DROP:
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if (query->drag_drop.pasteboard)
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CFRelease(query->drag_drop.pasteboard);
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break;
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case QUERY_PASTEBOARD_DATA:
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if (query->pasteboard_data.type)
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CFRelease(query->pasteboard_data.type);
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break;
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}
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[(WineWindow*)query->window release];
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free(query);
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}
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}
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/***********************************************************************
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* macdrv_set_query_done
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*/
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void macdrv_set_query_done(macdrv_query *query)
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{
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macdrv_retain_query(query);
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OnMainThreadAsync(^{
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NSEvent* event;
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query->done = TRUE;
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macdrv_release_query(query);
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event = [NSEvent otherEventWithType:NSApplicationDefined
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location:NSZeroPoint
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modifierFlags:0
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timestamp:[[NSProcessInfo processInfo] systemUptime]
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windowNumber:0
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context:nil
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subtype:WineApplicationEventWakeQuery
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data1:0
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data2:0];
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[NSApp postEvent:event atStart:TRUE];
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});
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|
}
|
|
|
|
@end
|